1. Operating Band: 1SM 2.4Hz Worldwide.
2.One transmitter and multiple receivers.
3. Latency: <1.5mS
4. GFSK digital modem
5. Noise signal ratio: 80dB, Dynamic Range:81dB, receiving sensitivity:-85dBm
6. Transmission distance is over 50meters in open field.
7.Built-in rechargeable lithium battery.
Ⅲ.Operation for audio transmitting module
1. Working modes for transmitter
①normal working mode ② matching working mode
After power on the device, it will enter the normal working mode. Press the “CHANNEL” button for 3
seconds to enter into matching mode. When the device is under matching mode, press the “CHANNEL”
button slightly to exit matching mode and enter into normal working mode.
2. Button operation
“CHANNEL” button is for matching and switching. Press the “CHANNEL” button for less than 3 seconds,
the channel will change for one time, totally 20 channels. The device will search for clean channel when
power on. Press the “CHANNEL” button and hold more than 3 seconds, matching process starts.
Meanwhile charging indicator light and communication indicator light will flash alternately, after the
charging indicator light of the receiving module is off, press the “CHANNEL” button again to lock the channel.
3. Power switch to turn on/off the item.
Ⅳ.Operation for audio receiving module
1. Receiving module working mode
3 working mode for receiving module: on-line mode, normal mode and matching mode.
After power on the module, it will enter into on-line mode, the receiving module will search the signal from
a matched transmitting module. If turn on the transmitting module at the moment it will enter into normal
working mode. Under on-line mode and normal working mode can enter into matching mode through
pressing “CHANNEL” button for 3 seconds. Under matching mode, press “CHANNEL” button slightly to
exit matching mode and enter into on-line mode. If the matching process is done, the device will enter
on-line mode directly.
“CHANNEL” is matching button. Press “CHANNEL” button and hold more than 3 seconds, matching
process starts. Meanwhile charging indicator light and communication indicator light will flash alternatively.
After the receiving module charging indicator lights off, matching process is completed successfully and
enter into on-line mode. Before matching process completed, press “CHANNEL” button, the device will
exit matching mode and enter into on-line mode.
3.Power switch operation
Turn on or turn off power through “power SW” button.
Through USB charging socket to fulfill. While it’s charging, indicator light is on. Indicator light will be off
after fully charged.
Charging Indicator Iight：When module detect low battery, indicator starts to blink at 2-second intervals.
while it’s charging, indicator will light on constantly. And indicator light off after fully charged.
Communication Indicator Iight: indicator blink when power on the device and keep blink at 2-second
intervals during operation period. Press matching button and hold more than 3 seconds, red light and blue
light flash alternatively.